Sigmund Freud - 1900 The Interpretation Of Dreams

WHEREAS there was a space of nine years between the first and second
editions of this book, the need of a third edition was apparent when
little more than a year had elapsed. I ought to be gratified by this
change; but if I was unwilling previously to attribute the neglect
of my work to its small value, I cannot take the interest which is now
making its appearance as proof of its quality.
The advance of scientific knowledge has not left The
Interpretation of Dreams untouched.